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Test ID FF13F Factor XIII, Functional

Method Name


Reporting Name

Factor XIII, Functional

Specimen Type

Plasma Na Cit

Specimen Required

1 mL platelet-poor plasma, shipped frozen. Draw blood into a 3.2% sodium citrate (light blue-top) tube. Centrifuge light blue-top tube 15 minutes at approx. 1500 g within 60 minutes of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial. Centrifuge a second time and transfer platelet-poor plasma into a new plastic vial. Plasma must be free of platelets (<10,000/mcl). Freeze immediately.


Note: Note oral anticoagulant therapy

Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma Na Cit Frozen 14 days

Reference Values

57 – 192 % activity

Day(s) and Time(s) Performed


Performing Laboratory

Quest Diagnostics Nichols Institute

Test Classification

This test was developed using a kit that has not been approved or cleared by the FDA. The analytical performance characteristics of this test have been determined by Quest Diagnostics. This test should not be used for diagnosis without confirmation by other medically established means.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FF13F Factor XIII, Functional 27815-0


Result ID Test Result Name Result LOINC Value
Z3618 Factor XIII, Activity 27815-0